The Hay - Paunceforte Treaty - initiated by Secretary of State Hay and Lord Paunceforte, then British ambassador to the US, this treaty stated that the Americans could build a canal and control the zone area, but could not fortify it.
The Hay - Bunau-Varilla Treaty - between the US and Panama gave America full rights to any future canal building in the region.
Clayton - Bulwar Treaty - ensured that America and Britain would be involved in building a canal. Despite the latter's involvement, the treaty significantly increased US control over the region.
Spooner Amendment - passed in the Senate instructing President Roosevelt to purchase the New Panama Canal Company claims for US$40 million.
